A detection tool for a door frame assembly

Abstract

The application discloses a detection tool for a door frame assembly, and relates to the technical field of automobile part detection equipment, comprising a detection platform, wherein the detection platform is provided with a positioning unit which is inclined compared with the vertical direction, the detection platform and the positioning unit are an integral structure and are integrally pressure cast by cast iron, and the positioning unit is provided with a positioning groove for positioning the door frame assembly; a plurality of groups of pressing units are arranged at intervals around the end of the positioning groove, the pressing unit comprises a driving piece and a pre-pressing piece, the driving piece can drive the pre-pressing piece to rotate above the positioning groove, so that the end of the door frame assembly is pressed against the positioning groove. The detection platform and the positioning unit for positioning are formed by using an integrated pressure casting process, which can effectively avoid the deformation of the positioning unit during the detection process, reduce wear and tear, and cope with high-order detection and correction operations. The redesigned pressing unit can also automatically and synchronously clamp.

Description

Technical Field

[0001] This application relates to the field of automotive parts testing equipment technology, and in particular to a testing fixture for a door frame assembly. Background Technology

[0002] When automotive door frame assemblies fail to meet 100% dimensional standards after welding, workers often need to perform reshaping on assembly jigs to ensure the final product meets customer quality requirements. This reshaping is frequent, with approximately 70% of products requiring reshaping on jigs, significantly impacting the jigs' accuracy and causing wear.

[0003] Furthermore, the testing equipment for automotive door frame assemblies uses clamps for clamping during the testing process. After placing the product, it needs to be clamped sequentially, involving numerous manual steps. In addition, although the clamping force is small, excessive straightening frequency will cause wear and tear on the clamps, requiring timely replacement with new clamps. Therefore, the inspection tool needs to be maintained every six months, and the maintenance cost is high. Utility Model Content

[0004] This application aims to solve one of the aforementioned technical problems in the prior art. To this end, embodiments of this application provide a testing fixture for a door frame assembly.

[0005] According to an embodiment of this application, a testing fixture for a door frame assembly is provided, including a testing platform. The testing platform is provided with a positioning unit, which is inclined relative to the vertical direction. The testing platform and the positioning unit are an integral structure and are integrally die-cast from cast iron. The positioning unit is configured with a positioning groove for positioning the door frame assembly.

[0006] Several sets of clamping units are arranged at intervals around the end of the positioning groove. Each clamping unit includes a driving member and a pre-pressing member. The driving member can drive the pre-pressing member to rotate above the positioning groove so as to press the end of the door frame assembly against the positioning groove.

[0007] The aforementioned inspection fixture for the door frame assembly has at least the following beneficial effects: During inspection, the door frame assembly is placed on the positioning slot. The tilted positioning unit facilitates positioning and subsequent inspection. After the door frame assembly is placed, the clamping unit is activated. The pre-pressing component automatically clamps the door frame assembly under the action of the driving component, facilitating subsequent inspection and straightening. This application uses an integrated die-casting process to form the inspection platform and positioning unit for positioning. This effectively avoids deformation of the positioning unit during straightening inspection, which affects accuracy. Furthermore, the integrated die-casting design eliminates the need for assembly processes, significantly reducing wear and tear. It can handle high-frequency inspection and straightening operations and reduces maintenance frequency. Additionally, the redesigned clamping unit can automatically and synchronously clamp, eliminating the need for manual clamping operations and effectively improving inspection efficiency.

[0008] According to the door frame assembly testing fixture described in the embodiments of this application, the positioning unit is provided with a straightening groove, and the bottom of the straightening groove is lower than the positioning groove.

[0009] According to the inspection fixture for the door frame assembly described in the embodiments of this application, the driving component is a rotary cylinder, the pre-pressing component is fixed to the cylinder rod of the rotary cylinder, and the pressing end of the pre-pressing component first rotates to the top of the positioning groove under the action of the rotary cylinder and then presses down toward the positioning groove.

[0010] According to the inspection fixture for the door frame assembly described in the embodiments of this application, the clamping unit further includes a guide member, which has a guide groove for positioning the clamping position of the pre-pressing member. When the pre-pressing member is pressed down toward the positioning groove, a portion of the pre-pressing member can enter the guide groove.

[0011] According to the door frame assembly testing fixture described in the embodiments of this application, the end of the pre-compression member is provided with a pre-compression head that can be adjusted in the vertical direction, and the pre-compression head is made of rubber.

[0012] According to the inspection fixture for the door frame assembly described in the embodiments of this application, the end of the pre-compression component is provided with an adjustment structure, the adjustment structure includes an adjustment rod, the adjustment rod is threadedly connected to the pre-compression component so that the adjustment rod can be adjusted in the vertical direction, wherein the pre-compression head is fixed to the end of the adjustment rod.

[0013] According to the inspection fixture for the door frame assembly described in the embodiments of this application, the body of the adjusting rod is provided with an external thread, and the pre-pressing component is provided with a screw hole adapted to the external thread.

[0014] According to the inspection fixture for the door frame assembly described in the embodiments of this application, the adjustment structure further includes two locking nuts, which are threadedly connected to the adjustment rod, and the two locking nuts are respectively located on both sides of the pre-compression member.

[0015] According to the door frame assembly testing fixture described in the embodiments of this application, the testing platform is further provided with a fixing component, the fixing component including a fixing groove that can elastically adjust the width, the fixing groove being used to clamp a go gauge.

[0016] According to the inspection fixture for the door frame assembly described in the embodiments of this application, the fixing member is made of a spring sheet. The two ends of the spring sheet are first brought close together to form a ring-shaped fixing member. Then, the intersection of the two ends of the spring sheet is recessed inward to form the fixing groove. The width between the opening of the fixing groove and the bottom of the fixing groove gradually increases and then gradually decreases.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The present application will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the structure of the testing fixture for the door frame assembly according to an embodiment of this application. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of the testing fixture for the door frame assembly in this embodiment of the application. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the structure of the testing fixture for the door frame assembly in this embodiment of the application. Figure 3 ;

[0022] Figure 4 This is a schematic diagram of the structure of the clamping unit in the embodiments of this application. Figure 1 ;

[0023] Figure 5 This is a schematic diagram of the structure of the clamping unit in the embodiments of this application. Figure 2 ;

[0024] Figure 6 This is a schematic diagram of the structure of the fastener in an embodiment of this application.

[0025] Reference numerals: frame 100, detection platform 110, positioning unit 120, straightening groove 121, clamping unit 200, rotary cylinder 210, pre-compression component 220, adjusting rod 230, pre-compression head 240, locking nut 250, guide component 260, fixing component 310, fixing groove 311, no-go gauge 320. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.

[0027] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0030] Reference Figures 1 to 3 The door frame assembly testing fixture provided in this application includes a testing platform 110 and several sets of clamping units 200.

[0031] The detection platform 110 is equipped with a positioning unit 120, which is inclined relative to the vertical direction. The detection platform 110 and the positioning unit 120 are an integral structure and are integrally die-cast from cast iron. The positioning unit 120 is equipped with a positioning groove for positioning the door frame assembly.

[0032] The inclined positioning unit 120 facilitates the loading and unloading of the door frame assembly. Compared with the horizontal placement of the door frame assembly, it can prevent the door frame assembly from twisting and reduce the deformation rate.

[0033] The detection platform 110 and positioning unit 120 used for positioning are formed by integrated die casting process, which can effectively avoid the positioning unit 120 from deforming and affecting the accuracy during the correction detection process. Moreover, the integrated die casting design does not need to consider the assembly process, and wear will be greatly reduced. It can cope with high-frequency detection and correction operations and reduce the number of maintenance.

[0034] It should be noted that the middle part of the door frame assembly is prone to deformation, therefore, the middle part generally requires appropriate straightening, while the two ends of the door frame assembly have less deformation and can be pressed down. In this embodiment, the pressing units 200 are spaced apart around the ends of the positioning groove. The pressing unit 200 includes a driving member and a pre-pressing member 220. The driving member can drive the pre-pressing member 220 to rotate above the positioning groove to press the ends of the door frame assembly against the positioning groove. After the door frame assembly is placed, the pressing unit 200 is activated, and the pre-pressing member 220 automatically presses the door frame assembly under the action of the driving member to facilitate subsequent inspection and straightening. Compared with existing pressing methods, this can greatly reduce manual operation procedures and labor intensity.

[0035] In this embodiment, the inspection fixture for the door frame assembly also includes a movable frame 100, and the inspection platform 110 is mounted on the dummy to facilitate the turnover of the entire door frame assembly inspection fixture. Furthermore, the heat treatment of the inspection platform 110 and the positioning unit 120 can reach HRC50-55, greatly improving the overall hardness and preventing wear due to long-term use.

[0036] In some embodiments, such as Figures 1 to 3 As shown, the positioning unit 120 is provided with an orthopedic groove 121. The bottom of the orthopedic groove 121 is lower than the positioning groove. The orthopedic groove 121 is provided to facilitate workers to perform orthopedic operations.

[0037] After the door frame assembly is positioned, a go gauge 320 is used to measure along the gap between the door frame assembly and the positioning groove. If a dimensional deviation is found, the worker places his hand in the straightening groove 121 and uses his hand to bend the relevant position of the door frame assembly in order to straighten it.

[0038] In some embodiments, such as Figure 4 and Figure 5 As shown, the driving component is a rotary cylinder 210, and the pre-compression component 220 is fixed to the cylinder rod of the rotary cylinder 210. Under the action of the rotary cylinder 210, the pressing end of the pre-compression component 220 first rotates to the top of the positioning groove and then presses down towards the positioning groove. When no pressing operation is performed, the pre-compression component 220 is not in the top of the positioning groove under normal conditions to avoid affecting the loading and unloading of the door frame assembly. When a pressing operation is required, the rotary cylinder 210 drives the pre-compression component 220 to rotate to the relevant position and then presses and fixes the door frame assembly.

[0039] In some other embodiments, the clamping unit 200 further includes a guide 260 having a guide groove for positioning the clamping position of the pre-compression member 220. When the pre-compression member 220 is pressed down toward the positioning groove, a portion of the pre-compression member 220 can enter the guide groove. The guide groove is used to determine the final clamping position of the pre-compression member 220, avoiding deviations in positioning during high-frequency clamping. The guide groove ensures that the clamping position of the pre-compression member 220 is the same each time.

[0040] like Figure 4 and Figure 5 As shown, the end of the pre-compression member 220 is provided with a pre-compression head 240 that can be adjusted in the vertical direction, which facilitates the adjustment of the clamping force; the pre-compression head 240 is made of rubber, which can avoid rigid contact and damage to the surface of the end of the door frame assembly.

[0041] In some specific embodiments, the end of the pre-compression member 220 is provided with an adjustment structure, which includes an adjustment rod 230. The adjustment rod 230 is threadedly connected to the pre-compression member 220 so that the adjustment rod 230 can be adjusted in the vertical direction. The pre-compression head 240 is fixed to the end of the adjustment rod 230.

[0042] The adjusting rod 230 has an external thread, and the pre-pressing component 220 has a threaded hole that matches the external thread. The pressure of the pre-pressing head 240 against the door frame assembly is adjusted by rotating the adjusting rod 230, making adjustment convenient. To make the rotation of the adjusting rod 230 even more convenient, a handle can be provided at the end of the adjusting rod 230.

[0043] In some examples, the adjustment structure also includes two locking nuts 250, which are threadedly connected to the adjusting rod 230. The two locking nuts 250 are located on both sides of the preload member 220. The adjusting nuts serve to prevent loosening and avoid insufficient preload caused by repeated tightening.

[0044] like Figure 3 and Figure 6 As shown, the inspection platform 110 is also equipped with a fixing member 310, which includes a fixing groove 311 with adjustable width. The fixing groove 311 is used to clamp the no-go gauge 320. The fixing groove 311 with adjustable width facilitates the placement of the no-go gauge 320.

[0045] Specifically, the fastener 310 is made of a spring sheet. The two ends of the spring sheet are first brought close together to form a ring-shaped fastener 310. Then, the intersection of the two ends of the spring sheet is recessed inward to form a fixing groove 311. The width between the opening of the fixing groove 311 and the bottom of the fixing groove 311 gradually increases and then gradually decreases so that the no-go gauge 320 can be clamped and fixed after being placed in the fixing groove 311, making it easy to pick up and put down.

[0046] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A testing fixture for a door frame assembly, characterized in that: include The testing platform is equipped with a positioning unit, which is inclined relative to the vertical direction. The testing platform and the positioning unit are an integral structure and are integrally die-cast from cast iron. The positioning unit is equipped with a positioning groove for positioning the door frame assembly. Several sets of clamping units are arranged at intervals around the end of the positioning groove. Each clamping unit includes a driving member and a pre-pressing member. The driving member can drive the pre-pressing member to rotate above the positioning groove so as to press the end of the door frame assembly against the positioning groove.

2. The inspection fixture for the door frame assembly according to claim 1, characterized in that: The positioning unit is provided with an orthopedic groove, the bottom of which is lower than the positioning groove.

3. The inspection fixture for the door frame assembly according to claim 1, characterized in that: The driving component is a rotary cylinder, and the pre-pressing component is fixed to the cylinder rod of the rotary cylinder. Under the action of the rotary cylinder, the pressing end of the pre-pressing component first rotates to the top of the positioning groove and then presses down toward the positioning groove.

4. The inspection fixture for the door frame assembly according to claim 3, characterized in that: The pressing unit further includes a guide member, which has a guide groove for positioning the pressing position of the pre-pressing member. When the pre-pressing member is pressed down toward the positioning groove, a portion of the pre-pressing member can enter the guide groove.

5. The inspection fixture for the door frame assembly according to claim 1, characterized in that: The end of the pre-compression member is provided with a pre-compression head that can be adjusted in the vertical direction, and the pre-compression head is made of rubber.

6. The inspection fixture for the door frame assembly according to claim 5, characterized in that: The end of the pre-compression component is provided with an adjustment structure, the adjustment structure including an adjustment rod, the adjustment rod being threadedly connected to the pre-compression component so that the adjustment rod can be adjusted in the vertical direction, wherein the pre-compression head is fixed to the end of the adjustment rod.

7. The inspection fixture for the door frame assembly according to claim 6, characterized in that: The adjusting rod has an external thread, and the preload component has a screw hole that matches the external thread.

8. The inspection fixture for the door frame assembly according to claim 7, characterized in that: The adjustment structure also includes two locking nuts, which are threadedly connected to the adjustment rod. The two locking nuts are located on both sides of the preload member.

9. The inspection fixture for the door frame assembly according to claim 1, characterized in that: The testing platform is also equipped with a fixing component, which includes a fixing groove whose width can be flexibly adjusted. The fixing groove is used to clamp the go gauge.

10. The inspection fixture for the door frame assembly according to claim 9, characterized in that: The fastener is made of a spring sheet. The two ends of the spring sheet are first brought together and shaped to form a ring-shaped fastener. Then, the intersection of the two ends of the spring sheet is recessed inward to form the fastening groove. The width between the opening of the fastening groove and the bottom of the fastening groove gradually increases and then gradually decreases.

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